fix mixed args

Author: yatsenkolesh

src/DataSource/DataProviders/DataProvider.php

@@ -8,9 +8,9 @@
 
 abstract class DataProvider
 {
-    protected mixed $activeData;
+    protected \mixed $activeData;
 
-    public function __construct(mixed $activeData)
+    public function __construct(\mixed $activeData)
     {
         $this->setActiveData($activeData);
     }
@@ -27,7 +27,7 @@ public function getActiveData()
      * @param mixed $activeData
      * @return DataProvider
      */
-    public function setActiveData(mixed $activeData): self
+    public function setActiveData(\mixed $activeData): self
     {
         $this->activeData = $activeData;
         return $this;

src/Document/Schema/RootSchema.php

@@ -45,13 +45,13 @@ public function isCollection(): bool
     }
 
 
-    public function setActiveData(mixed $activeData): self
+    public function setActiveData(\mixed $activeData): self
     {
         $this->activeData = $activeData;
         return $this;
     }
 
-    public function replaceDataProvider(mixed $activeData): self
+    public function replaceDataProvider(\mixed $activeData): self
     {
         $dataProviderClass = get_class($this->dataProvider);
         $this->dataProvider = new $dataProviderClass($activeData);